雙組份燃油液滴之燃燒研究

An Experimental Study on the Combustion of Binary-Fuel Droplets

涂盛展(Sheng-Jan Tu)

指導教授 ： 王興華

國立臺灣大學/工學院/機械工程學研究所/碩士(2009年)

https://doi.org/10.6342/NTU.2009.01059

摘要

本實驗利用陶瓷纖維將液滴掛於其交點處，在重力場下觀察不同沸點的油料混合後，其液滴的燃燒行為與特性，本實驗所使用的雙組份油料有生質柴油/大豆油、生質柴油/玉米油、生質柴油/葡萄籽油、生質柴油/乙醇。
實驗結果顯示，生質柴油與大豆油因性質類似，所以產生微爆與火焰縮口的現象不如其他兩種生質油料頻繁；當生質油料與生質柴油之沸點差距不大，則液滴在發生微爆後，仍可繼續維持球對稱燃燒。而乙醇/生質柴油之雙組份油料，則會出現許多不同的現象，其為點火溫度差異性所導致，因乙醇與生質柴油沸點差異極大，所以當發生微爆後，液滴則會炸開破裂，變成許多熄滅的小液滴。

關鍵字

液滴 ； 燃燒 ； 微爆 ； 火焰縮口

並列摘要

Experiments make suspended droplets include binary fuels of different boiling point , and observe characteristics of the combustion. The binary fuel mixtures used in this experiment were biodiesel/soybean oil, biodiesel/corn oil, biodiesel/ grapeseed oil, and biodiesel/ ethanol.
This experimental results showed the variation of micro-explosion and flame shrinkage were slight , because the property of biodiesel and soybean oil were similar. After the micro-explosion of droplet , it still keep spherical symmetry on combustion ,when boiling point of bio oil and bio diesel were similar. Biodiesel/ ethanol fuel on different heating temperature will cause varied status , after the micro-explosion of droplet , it will burst and become numerous extinction little droplets , when boiling point of ethanol and bio diesel were different.

並列關鍵字

Droplet ； Combustion ； Micro-explosion ； Flame shrinkage

參考文獻

1. B.J.Wood and W.A.Rosser,“An Experimental Study of Fuel Droplet

Investigation of the Ignition of the Fuel Droplets,”Combustion Science and Technology,vol.16,p.59,1977.

3. C.K.Law,“Internal Boiling and Superheating in Vaporizing

4. C.K.Law and H.K.Law,“A D2-Law for Multicomponent Droplet Vaporization

Spherically Symmetrical Droplet Combustion of Sooting Fuels,”